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Ruby on Rails - Factory Girl
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  Defining Factories

If you have a ActiveRecord User class with name and email attributes, you could create a factory for it by making the FactoryGirl guess it:

FactoryGirl.define do
  factory :user do # it will guess the User class
    name     "John"
    email    "[email protected]"
  end
end

Or you can make it explicit and even change its name:

FactoryGirl.define do
  factory :user_jack, class: User do
    name     "Jack"
    email    "[email protected]"
  end
end

Then in your spec you can use the FactoryGirl's methods with these, like this:

# To create a non saved instance of the User class filled with John's data 
build(:user) 
# and to create a non saved instance of the User class filled with Jack's data
build(:user_jack)

The most common methods are:

# Build returns a non saved instance
user = build(:user)

# Create returns a saved instance
user = create(:user)

# Attributes_for returns a hash of the attributes used to build an instance
attrs = attributes_for(:user)



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